Surgical chair



(No Model.) 4 SheetsSheet 1.

A. P. GOULD. SURGICAL CHAIR.

No. 453,184. Patented June 2,1891.

WITNESSES: 1329.2

W M Wu ATTORNEY Nb Model.) 4 Sheets- Sheet 2..

A. P. GOULD.

SURGICAL CHAIR.

No. 453,184. PatentedJune 2,1891.

WITNESSES:

ATTORNEY Ya: nonnrs PETERS c (No Model.) 4 Sheets-Sheet 3.

' A. P. GOULD.

SURGICAL CHAIR.

No. 453,184. Patented June 2,1891.

4 M INVENTOR- A rromm (No Model.) 4 Sheets-Shet 4. 'A. P. GOULD.

SURGICAL CHAIR.

Patented June 2 Fly. 12/.

frame.

UNITED STATES PATENT OFFICE.

AARON P. GOULD, OF CANTON, OHIO.

SURGICAL CHAIR.

SPECIFICATION forming part of Letters Patent No. 453,184, dated J une 2, 1891.

Application filed June 22, 1887.

To all whom it may concern.-

Be it known that I, AARON P. GOULD, a citizen of the United States, and a resident of Oanton, county of Stark, State of Ohio, have lnvented a new and useful Improvement in Surgical Chairs, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, making part of this specification.

My invention relates to improvements in surgical chairs, the object of which is to provide a chair that may be made to assume the various positions required for examination and treatment in surgical operations; and it consists of the parts and combinations of parts hereinafter described, and set forth in the claims.

Figure 1 is a View of the chair in horizontal adjustment. Fig. 2 is a view in which the back is shown in horizontal position, the seat and leg-rest being dropped down to their normal position. Fig. 3 shows the back in horizontal adjustment, with the seat inclined, and the leg-rest in normal position. Fig. 4 shows the back, seat, and leg-rest adjusted to the same inclination. with the head-rest lower than the foot-rest. Fig. 5 shows the back in horizontal adjustment, the seat raised and inclined, and the leg-rest dropped to normal position. Fig. 6 shows the parts in normal position, the chair tipped diagonally forward to disclose the details. Fig. 7 is a view in perspective of the rotary chair-body support and locking- Fig. 8 is a view in perspective of a swinging locking frame orlatch. Figs. 9 and 10 are detached views of the seat-frame and operating mechanism. Fig. 11 is a detail view of the base of the chair, showing the stern of the body-support having a screw-threaded connection with the tubular body portion of the said base. Figs. 12 and 1-3 represent enlarged detail views of parts.

The purpose of the positions shown by the figures of the accompanying drawings are well known to the profession and will require no explanation in a detailed description of the construction of the chair. That I attain the object set forth effectually and expedi- Serial No. 242,132. (No model.)

from which the legs a are projected downwardly and outwardly, forming a broad basesupport. The revolving body-support B has a lower or stem portion a cylindrical in form and adapted to rotate in the tubular body portion of the base A, as shown in Figs. (3 and 7. If preferred, the tube in the body portion and the stem portion of the body-support may be provided with annular screw-threads adapted one to the other, as shown in Fig. 11, for the purpose of adjusting the body of the chair to any height. In the form shown in Figs. 6 and 7 the shoulder a of the bodysupport rests on the flange (0 of the body portion of the base. For the purpose of arresting the rotary movement of the body-support, the clamping-screw a turned into a threaded boss ct on the side of the tubular body portion of the base, may be turned in against the stem of the body-support, by which the base and the body-support may be held in a rigid adjustment.

From the upper end of the stem a of the rotary body-support B arms a" are projected outwardlyand upwardly, at the upperend of which there is formed a pivotal connection a with the body-frame C of the chair, about which it may be rocked or vibrated. To fix the body of the chair at any desired inclination or position within the limits of vibration about the said pivotal connection a there is projected from the rotary body-support B a segmental rack (t having perforations a or, if preferred, rack-teeth or notches may be used instead of the perforations herein shown. A dependent latch D is connected to and vibrates with the body of the chair about the pivotal connection a said latch having a locking pin or tooth 1), adapted to the perforations C010. For convenience in operating said latch a foot-piece b is provided and a spring b the said spring holding the latch in engagement with the rack, and by pressing the foot on the plate I) the latch may be disengaged and the tooth withdrawn from the rack and the chair-body vibrated over the base and again locked in the desired adjustment.

The back-section E is supported between the arm-supports F on pivots or trunnions 19 located near the upper rear, portion, about which the said back-section may be vibrated from a horizontal to a vertical position and held in adjustment by turning the set-screw b against the curved arm Z), said arm having at its upper end a pivotal connection with the back-section, as I), while the free end of said curved arm is passed through the loop b An auxiliary rocking frame by which the seat may be raised and lowered and by which the back-section E and the seat-section G have a pivotal connection, and which also is a means of locking the back and seat in adjustment, is provided, and consists of an open V-shaped portion II and two arms cl, extending from the V-shaped portion parallel to each other and pivotally secured to the sides of the back-section near their lower ends and to the sides of the seat-section near their rear ends by suitable bolts or studs d (P, which extend through perforations in the arms (Z. The V-shaped portion of the frame, when in position, is located beneath the seat-section and pointing toward the front and downwardly.

The rock-shaft J is pivoted to lugs (1, proj ected from the seat-frame K, by means of the arms (1, integral with the shaft, the outer end of the shaft terminating in an operatingcrank (1 On the under side of and rigidly connected with the seat-frame K there is provided a cross-bar L, a spring-aetuated catch R, formed of a rod (1 sliding in perforations in the depending lugs (Z secured to or integral with said bar. The inner end of said rod has a depending catch-hook (1 adapted to take under the arm f, which is aprolongation of the arm (Z on the inner end of the shaft J when the said arm f is elevated for adjustment. The arm f extends through a slot f at the vertex of the V-shaped portion of the rocking frame and has a sliding movement therein. A spiral spring f is secured on the rod al between the ing (i andashoulder f and by its tension holds the catch d in locking adj ustment. The front of the seat-section G is pivotally attached to the front inner face of the arm-support F in a swinging adjustment by means of a pair of depending arms I), loosely secured at the upper end oninwardly-projected studs or bolts f" on the inner face of the arm-support F, and on studs or bolts f set in the side of the seat-section near their front ends. The pivotal bolts f on each side are also connected with bolts f on the inner face of the armsupport F, below the bolts f by a jointed arm consisting of sections f and f. The leg and foot rest section N is hinged to the seat-section G by means of corner extensions h, formed with elongated slots h,which embrace the pivotal bolts f. The extensions h, after passing the bolts f are bent at right angles and extend rearward a shortdistanee, terminating in open hooks 7L2, adapted to receive short studs h on the inner sides of the jointed arm-section f. The slots h are sufficiently elongated to admit of the extension h slipping outwardly and upwardly enough to free the hooks 7L2 from the studs 7L and allow the foot and leg rest section to depend in a free swinging motion from the bolts f"; but when the hooks Ware engaged with the studs its the foot and leg rest section willbe subject to such changes as are determined by the combined action of the arms 0 and the jointed arms f f.

For the purpose of holding the feet of the patient in a suitable position for certain classes of operations, stirrupsP are provided, the stems n of which are secured in longitudinal adjustment in the rotary adjustable clamps 0 provided with a tail-nut 0", for the purpose of clamping the stemn of the stirrup in any desired longitudinal adjustment, and also for the purpose of locking at the same time the clamp in any desired rotary ad ustment. By the above construction the stirrups may be adjusted and locked in any desired vertical or angular adjustment.

A chair constructed as hereinbefore described may be operated as follows: Presuming the chair to be in normal position, as shown in Fig. 6. It now the curved arm I) be released and the back-section pressed backward and down, pivoting as a lever over the trunnions I), the seat and leg rest sections may be raised to a horizontal plane with the back-section, the lower end of the back being pivoted to the arm (Z of the rocking frame H, by which the seat is moved forward and up. This motion of the seat-seetion will also, by the combined action of the arms 19 f, and f and the bent extensions h, with their hooked ends 7L2 in engagementwith the studs IL3 on arm f, gradually elevate the leg-rest section, in which position the parts may be secured by turning the screw b against the curved arm h The patient being now on the chair for certain operations, the feet may be secured in the stirrups P. If now the spring-catch R d be released from engagement with the rocking frame and the crank d turned to a vertical position, the seat and leg sections may be dropped away from the person to position as shown in Fig. 2, and when the chair is so occupied, for the purpose of betterilluminating the subject, the body of the chair may be rotated on the base A, the stem a of the bodysupport B turning in the tubular portion of the base A, and may be fixed in adjustment by the handle-screw a and, if required, the lower portion of the patients body may be raised by disengaging the latch D from the rack a" and-rocking the body of the chair back over the pivot a of the body-support B or, if required, when the body of the chair is so rocked or tipped back the seat-section may be raised up, as shown in Fig. 5, to support the patient, the back-section raised to a horizontal position, the hooks 7L2 released from the studs in will allow the leg and foot rest to depend in a swinging position over the bolts f; or with the parts in position as shown in Fig. 1, by releasing the latch D from rack a the position may be changed to that shown in Fig. l, by which the head of the patient maybe placed below the feet; or when back, seat, and leg rest sections are in normal position,as shown in Fig. 6, by releasing the locking-latch D the body of the chair may be rotated or rocked vertically about the horizontal body-su pportin g pivots a and fixed in'adj ustment by the latch D, engaging the rack to", and the chair, when in any of the positions that it may be made to assume, may be rotated horizontally about a vertically-supporting pivot.

Having thus fully described the nature and object of my invention,what I claim, and desire to secure by Letters Patent, is

1. In combination, a tilting back-section, a seat-section having a swinging movement independent of its tilting support, a swinging leg-rest section, connections between the back, seat, and leg-rest sections which communicate the movements of the back-section to the seat and leg-rest sections, and a support common to the several sections and having a tilting movement backward of a vertical line, substantially as set forth.

2. In combination, a tilting back-section, a seat-section having aswinging movement independent of its tilting support, a swinging leg-rest section, connectionsbetween the back, seat, and leg-rest sections which communicate the movements of the back-section to the seat and leg-rest sections to throw the several sections into substantially a horizontal plane, and a support common to the several sections and having a horizontally-rotary adjustment and a forwardly and backwardly tilting adjustment, the backward tilt extending backward of a vertical line, substantially as set forth.

3. In combination, a tilting back-section, a seat-section having a swinging movement independent of its tilting support, a swinging leg-rest section, connections between the backsection and the seat and le -rest sections which communicate the movements of the back-section to the seat and leg-rest sections, a swinging frame for adjusting the seat-section, a swinging-frame-actuating device independent of the back-section, and a support common to the several sections and havingahori- Zontally-rotary adjustment and a forwardly and backwardly tilting adjustment, substantially as set forth.

4. In combinatioma tilting back-section, a seat-section having a swinging movement in dependent of its tilting support, aconnection between the back and seat sections through which the back-section controls the movements of the seat-section, and a support common to the two sections and having a tilting adjustment backward of a vertical line, substantially as set forth.

5. In combination, a tilting back-section, swinging seat and leg-rest sections controlled in their movements by the back-section, and a support common to the several sections and having a horizontally-rotary adjustment, a forwardly and backwardly tilting adjustment, and a vertical adjustment, substantially as set forth.

In testimony whereof I have hereunto set myhand this 18th day of June, A. D. 1887.

AARON P. GOULD.

WVitnesses:

CHAS. R. MILLER, W. K. MILLER. 

